Unlock instant, AI-driven research and patent intelligence for your innovation.

Hard disk drive with certification function

a hard disk drive and function technology, applied in the field of magnetic disk drives, can solve the problems of inability to improve the performance of recording and reproduction, the length of time required for authentication processing of authentication information, and the length of time required for encryption and decryption processing of encryption keys, etc., and achieve the effect of reducing processing load

Inactive Publication Date: 2011-11-22
WESTERN DIGITAL TECH INC
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This solution reduces the processing load and improves performance by minimizing communication steps and authentication time, enabling efficient concurrent recording and reproduction while ensuring data security.

Problems solved by technology

In addition, the length of time required for the authentication processing of the authentication information and the length of time required for encryption and decryption processing of the encryption key are relatively long.
Therefore, it is not possible to improve the performance of recording and reproduction.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hard disk drive with certification function
  • Hard disk drive with certification function
  • Hard disk drive with certification function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016]Specific embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, a magnetic disk drive 10 according to one embodiment of the present invention comprises a disk medium 1, a head assembly 2, a head controller 3, a read / write (RW) unit 4, and a controller 5. FIG. 1 is a diagram schematically illustrating a configuration of the disk drive. In addition, this magnetic disk drive 10 is connected to host side equipment 20.

[0017]The head assembly 2 includes a magnetic head. The head assembly 2 accesses the disk medium 1 while relatively moving above a surface of the disk medium 1 so that information is magnetically recorded / reproduced (written / read) to / from the disk medium 1.

[0018]The head controller 3 controls the head assembly 2 so as to move a magnetic head unit over the disk medium 1.

[0019]The RW unit 4 encodes a signal inputted from the controller 5, and then outputs encoded information as an electric signal to a magnetic head of ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
timeaaaaaaaaaa
order of transmission/receptionaaaaaaaaaa
transmission/receptionaaaaaaaaaa
Login to View More

Abstract

A magnetic disk drive is provided capable of reducing a processing load even in a mode of, for example, reproduction during recording. In one embodiment, a magnetic disk drive includes a storage unit for storing certificate information that relates to the magnetic disk drive and corresponds to a root key of a certification organization. The certificate information is used on the host side to perform authentication processing of the magnetic disk drive.

Description

CROSS-REFERENCES TO RELATED APPLICATIONS[0001]This application claims priority from Japanese Patent Application No. JP2005-285135, filed Sep. 29, 2005, the entire disclosure of which is incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]The present invention relates to a magnetic disk drive such as a hard disk drive, and to an information recording system such as a hard disk recorder that uses the magnetic disk drive.[0003]In recent years, various kinds of data including television programs are in general written to hard disks. On the other hand, recording of copyrighted data has required a function of preventing the written data from illegally flowing out or other similar functions. For example, at the time of recording a digital television broadcast, it is not permitted to record a plurality of contents each of which continues one minute or more. For this reason, if data whose length is one minute or more is recorded, an encryption key (issued as license information...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(United States)
IPC IPC(8): H04L29/00G06F21/10G06F21/33G06F21/60G11B20/10H04L9/08H04L9/32H04N19/00H04N19/467H04N19/70
CPCG06F21/10
Inventor WATANABE, YOSHIJUHIRAI, TATSUYA
Owner WESTERN DIGITAL TECH INC